A. You lost your last TV game
B. You DID beat your Rival last time you played
C. You didn't lose your last game, you lost your last 2! games.
D. The team you played was ranked 7th.
E. I'm guess your don't have a 4 to 5 level PR manager.
This games revenue was 248195, your previous home game, comeing off a loss, you pulled in 277153. Thats not a drop of 64K, its a drop of 29K. Considering it was the 7th ranked team, and you had twice as many losses before the game, I hardly think its a bug.
You can do 2 things, lower your prices, so that losses do not cause your income to fluctuate that much, or invest in a better PR manager.